50×3= 31×2= 14×3= 12×4= 70×8= 10×5= 60÷3= 20÷5= 48÷4= 99÷3= 86÷2= 50÷5= ．
我会算．++ 1﹣﹣++﹣﹣++ 1﹣﹣．
1﹣=+=﹣=+=﹣=+=+=+=
（1）先计算下面各题，再看看有什么规律．+=﹣=+=﹣=+=﹣= （2）根据上面的规律，直接写出下面各题的得数．+=﹣=+=﹣=+=﹣=
我会算．++﹣．
计算下面各题．﹣=﹣=﹣==﹣=﹣= 1﹣= 1﹣= 1﹣=
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